Phonehelp,
IF it is the Norstar Doorphone, it should be ringing to a target set. So am not clear about what the chimes would be. If Norstar door phone, Algo makes the following for it: AuxBox 4100 to which may be attached a ringer or strobe.
In a recent post an experienced tech reported the Norstar Door phone doesn't ring as a normal phone and he was unsuccessful with call route programing.
PhM